Vulnerability in Wireshark
CVE-2021-39923
Large loop in the PNRP dissector in Wireshark 3.4.0 to 3.4.9 and 3.2.0 to 3.2.17 allows denial of service via packet injection or crafted capture file
EPSS: 0.015 (71.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Wireshark
- Wireshark Foundation — versions >=3.2.0, <3.2.18, >=3.4.0, <3.4.10
- Debian Debian_linux — versions 10.0, 11.0, 9.0
Weakness classification (CWE)
References
- cve@gitlab.com (x_refsource_CONFIRM, Third Party Advisory)
- cve@gitlab.com (x_refsource_MISC, Vendor Advisory)
- cve@gitlab.com (Patch, x_refsource_MISC, Issue Tracking, Vendor Advisory)
- cve@gitlab.com (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
- cve@gitlab.com (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-39923?
- CVE-2021-39923 is a high-severity vulnerability in Wireshark, classified under Excessive Iteration. CVSS score: 7.5/10. Published 2021-11-19.
- How severe is CVE-2021-39923?
- High severity. CVSS v3 base score is 7.5 out of 10.